Improvement in weighing-scales



J. L. FO-LLETT. Weighing Scales No. 201,604 Patented March 26,1878.

Maggi? $02 UNITED STATES PATENT QFFIGE.

JOSEPH L. FOLLETT, OF NEW YORK, N. Y.

IMPROVEMENT IN WEIGHING-SCALES.

Specification forming part of Letters Patent No. 201,604, dated March26, 1 878 application filed February 28, 1878.

- both, with weights adjustable to and from the centers of action ofsaid devices, respectively. I also, for the same purpose, adjustablyconnect the said scale-beam and pendulum-lever.

With the apparatus is combined an indicator, which preferably isconnected with and operated by the pendulum, inasmuch as these twoparts-via, the pendulum-lever and the indicator-may be used as anattachment to any suitable scale now in use.

The nature of my invention will be understood by reference to theaccompanying drawing, in which-- Figure 1 is a side elevation of anapparatus embodying my invention in its preferred form. Fig. 2 is aviewof the link that, in the present instance, is used to connect thescale-beam and pendulum.

A is a scale-beam,'of ordinary or suitable construction, hung on aknife-edge fulcrum at a, and provided with a swinging pan, 1), tocontain the article to be weighed. The scalebeam may, if desired, beprovided with a weight, 0, which preferably is adjustable on the beamtoward and away from the fulcrum a, and can be held at any desiredadjustment by means of a clamp or set-screw.

The pendulum scale consists, in this instance, of an angle-lever, B,pivoted at its elbow, and having its vertical and longer arm (1weighted, as shown at C. The weight 0 preferably is adjustable up anddown on the part (I, and is held in place thereon by a clamp orset-screw, f. The shorter arm g of the pendulum-lever is nearlyhorizontal, and about parallel with the longer arm of the scalebeam,directly beneath which it is arranged in the same vertical plane. Thisarm of the pendulum-lever is connected with the scale-beam by a link, D,the hooked ends of which are provided with knife-edges adapted to enterand engage any one of a series of notches, h, formed on the upper edgeof the scale-beam and the under edge of the shorter arm of thependulunrlever.

The link is movable, and can be adjusted to any one of the notches,thu's lengthening or shortening, as the case may be, the working lengthof the two arms which it connects.

The above is the preferred manner of connecting the two devices. It,however, is manifest that, in lieu of the particular link shown,

other means of connecting the two levers may be employed withoutdeparture from my invention.

I propose to use in connection with the scale an indicator of suitableconstruction, which may be connected with or actuated by any movablepart of the scale. I prefer, however, as hereinbefore stated, to havethe indicator connected with or actuated by the pendulumlever. Such anarrangement is shown in the drawing, consisting of a hand or pointer,17, vibrating upon an axis, j, upon which also moves a slotted arm, k,rigidly attached to the pointer, and engaging a pin, 1, which pro jectsfrom the lower part of the pendulum-lever into the slot. The pointermoves over the face of a dial, m.

There may be two or more indicators, each operated by some moving partof the scale, and designed for different classes of weights, accordingto the adjustment of the scale; or the dial m may carry on its face twoor more registers or scales of division for the same purpose.-

For weighing light articles, the connectinglink between the scale-beamand the pendulum-lever is adjusted away from the centers of action ofthese devices. On the other hand, the slide on the scale-beam and theweight on the pendulum-lever are moved toward their respective centersof action. This lessens the resistance, and renders the scale sensitiveto light weights.

To adjust the scale for heavy weights, the adjustments are reversed,with the efi'ect of largely increasing the resistance.

- 4. The combination of the scale-beam, the pendulum-lever adjustablyconnected therewith, and the adjustable Weights carried by thescale-beam and the pendulum-lever, or either, substantially as setforth.

5. The combination of the scale-beam, the pendulum-lever, and themovable connectin glink, substantially as set forth.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

JOSEPH L. FOLLETT.

Witnesses THOMAS F. GoEN, A. V. J. SMITH.

